<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Unhandled Rejection</title>
    </head>
    <body>
        <script>
            window.addEventListener('unhandledrejection', (event) => {
                // 阻止终端输出错误
                event.preventDefault();
                console.log('Reason: ' + event.reason);
            });
            function foo() {
                Promise.reject('abc');
            }

            foo();
        </script>
    </body>
</html>
